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A027416 Number of unlabeled (and unrooted) trees on n nodes having a centroid. +0
5
1, 1, 0, 1, 1, 3, 3, 11, 13, 47, 61, 235, 341, 1301, 1983, 7741, 12650, 48629, 82826, 317955, 564225, 2144505, 3926353, 14828074, 27940136, 104636890, 201837109, 751065460, 1479817181, 5469566585, 10975442036, 40330829030, 82270184950 (list; graph; listen)
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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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